I do 200 yards with my handguns so I can't see why 300 wouldn't be a feasible goal. Might take some time to get zeroed in and I would like to see some targets when you do. Let us know how it works out.

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Good intentions will always be pleaded for any assumption of power. The Constitution was made to guard the people against the dangers of good intentions. There are men in all ages who mean to govern will, but they mean to govern. They promise to be good masters, but they mean to be masters.
--Daniel Webster--